Canon EF 17-40mm f/4 L USM lens assembly

This video is about the assembly of the Canon EF 17-40mm f/4 L USM lens. There was dust and fungus inside the lens, so I had to completely disassemble the lens, clean the lens elements, and then assemble the lens. In this video I'll show you how to assemble the lens after I cleaned the inside of it. UPDATES: n/a TIMESTAMPS: 00:00 Intro 00:39 Tools 00:52 Like, sub, donate 01:21 Assembly 29:18 Outro RELATED VIDEOS: Lens assembly (playlist):    • Lens assembly   Canon lens repair (playlist):    • Canon lens repair   Canon EF 17-40mm f/4L USM - how to clean the lens inside:    • Canon EF 17-40mm f/4L USM - how to clean t...   Canon EF 17-40mm f/4 L USM lens cleaning the USM motor focus sensor strip bar to repair focusing problems:    • Canon EF 17-40mm f/4 L USM lens clean the ...   Canon EF 17-40mm f/4 L USM lens disassembly:    • Canon EF 17-40mm f/4 L USM lens disassembly   DONATION: If you find that video useful, informative and adds value to you (and possibly saved, or made some money by repairing the camera or lens), then consider donating or buying something from my webshop!: PayPal: https://www.paypal.me/CamerasLensesEtc Patreon:   / cameraslensesetc   My eBay store: https://www.ebay.com/str/cameraslense... eBay affiliate link: https://ebay.us/2t0Xp9 AliExpress affiliate link: https://ali.ski/_RsFX Amazon affiliate link: https://amzn.to/3aAVxMT CRYPTO ADDRESSES: If you want to donate other crypto, let me know, and I open an address. Bitcoin address: 18BrF4zDFR32c4zMSMMZPpby2hKdM1nrKE Ethereum (Ether): 0x632cB6F5DFf9717946EBDdD7b48C59F9fe547d46 Bitcoin Cash (BCH): qq42ha793y74dapfyksa3y42c67z6zf5avvj37utyh Litecoin (LTC): LepXkmnW2HyiGQGyGcmRMuFmYYcxg4wak5 Bitcoin SV (BSV): 1LaLoWX2n14ou6PNzbA3QsFZXjdSu2kQQY CONTACT: Facebook page:   / cameraslensesetc   Facebook messenger: https://www.messenger.com/t/CamerasLe... TOOLS I USED (ebay / aliexpress link): PH000 screwdriver: http://ebay.us/Dz8nTA | https://ali.ski/2e8ZaZ Metal tweezers: http://ebay.us/jGp7JO | https://ali.ski/g4VpW Adjustable metal tweezers: http://ebay.us/yc3cbb | https://ali.ski/k_elg Wood screw: http://ebay.us/zty059 | https://ali.ski/61n7G